21778335

素因数分解:

$3^3\times 5^1\times {\mathrm{353}}^1\times {\mathrm{457}}^1$

素因数の和:824

約数の個数: 32

約数和(自身を含む): 38911680

約数和(自身を除く): 17133345

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 353, 457, 1059, 1371, 1765, 2285, 3177, 4113, 5295, 6855, 9531, 12339, 15885, 20565, 47655, 61695, 161321, 483963, 806605, 1451889, 2419815, 4355667, 7259445, 21778335]

約数ペア:

[(1, 21778335), (3, 7259445), (5, 4355667), (9, 2419815), (15, 1451889), (27, 806605), (45, 483963), (135, 161321), (353, 61695), (457, 47655), (1059, 20565), (1371, 15885), (1765, 12339), (2285, 9531), (3177, 6855), (4113, 5295)]